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dc.contributor.authorRoa Rovira, Joan Josep
dc.contributor.authorBartolomé, E.
dc.contributor.authorBozzo, Bernat
dc.contributor.authorCapdevila, X.G.
dc.contributor.authorGranados García, Javier A.J.
dc.contributor.authorSegarra, M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.identifier.citationRoa, J. [et al.]. Nano-mechanical properties of silver-welded YBCO bulks. "Journal of physics: conference series", 09 Febrer 2010, vol. 234, núm. 1, p. 012034/1-012034/6.
dc.description.abstractThe mechanical properties of melt-textured YBCO bulk boundaries are a topic of special interest especially in the manufacturing of superconductor devices for engineering applications. Instrumented indentation technique is a powerful tool widely employed to characterize the mechanical properties of small volumes. We presented results of the nanohardness (H) and Young’s modulus (E) across [001]-welds fabricated by silver welding. The residual imprints performed by a sharp tip indenter were observed by Field Emission Scanning Electron Microscope (FE-SEM) to investigate the different fracture mechanisms nucleated during the indentation process. Results show a decrease of the nanohardness across the grain boundary related to the appearance of a “welding path” free of Y-211 particles. The FE-SEM images show chipping and sink-in effects in that region. Remarkably, for zero-angle welds the mechanical properties are unaltered across the joint, thus probing the high quality of silver welds for large-scale applications.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.titleNano-mechanical properties of silver-welded YBCO bulks
dc.subject.lemacSuperconductors d'alta temperatura -- Propietats mecàniques
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorRoa, J.; Bartolomé, E.; Bozzo, B.; Capdevila, X.; Granados, X.; Segarra, M.
local.citation.publicationNameJournal of physics: conference series

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